Database Table for customer user

1. What is a customer table?
2. How do you create a customer table in SQL?
3. Should each customer have their own database?
4. How do I create a database table?
5. How is database related to a table?
6. How do you create a Department table?
7. How do I display a table in SQL?
8. Which create table statement is valid?
9. What is database design with example?
10. How do you create a good database?
11. What is database schema example?

What is a customer table?

The customer table contains a list of all customers. The customer table is referred to in the payment and rental tables and refers to the address and store tables using foreign keys.

How do you create a customer table in SQL?

The SQL CREATE TABLE statement for the customers table is: CREATE TABLE customers ( customer_id int NOT NULL, customer_name char(50) NOT NULL, address char(50), city char(50), state char(25), zip_code char(10), CONSTRAINT customers_pk PRIMARY KEY (customer_id) );

Should each customer have their own database?

Advantages of a database per customer

Makes it easy to export a given customers data. Better cache performance - a write to one of the more active tables only impacts that single customer that performed the write. Easier to scale across hardware.

How do I create a database table?

Create a new table in an existing database

1. Click File > Open, and click the database if it is listed under Recent. If not, select one of the browse options to locate the database.
2. In the Open dialog box, select the database that you want to open, and then click Open.
3. On the Create tab, in the Tables group, click Table.

How is database related to a table?

Answer. In relational databases, and flat file databases, a table is a set of data elements (values) using a model of vertical columns (identifiable by name) and horizontal rows, the cell being the unit where a row and column intersect. A table has a specified number of columns, but can have any number of rows.

How do you create a Department table?

Create DEPT table which will be the parent table of the EMP table. Table created. Create the EMP table which has a foreign key reference to the DEPT table. The foreign key will require that the DEPTNO in the EMP table exist in the DEPTNO column in the DEPT table.

How do I display a table in SQL?

Then issue one of the following SQL statement:

1. Show all tables owned by the current user: SELECT table_name FROM user_tables; Code language: SQL (Structured Query Language) (sql)
2. Show all tables in the current database: SELECT table_name FROM dba_tables; ...
3. Show all tables that are accessible by the current user:

Which create table statement is valid?

COMMENT : How to upload?
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What is database design with example?

Database design is the organization of data according to a database model. The designer determines what data must be stored and how the data elements interrelate. ... Database management system manages the data accordingly. Database design involves classifying data and identifying interrelationships.

How do you create a good database?

The design process consists of the following steps:

1. Determine the purpose of your database. ...
2. Find and organize the information required. ...
3. Divide the information into tables. ...
4. Turn information items into columns. ...
5. Specify primary keys. ...
6. Set up the table relationships. ...
7. Refine your design. ...
8. Apply the normalization rules.

What is database schema example?

A database schema can be represented in a visual diagram, which shows the database objects and their relationship with each other. ... Above is a simple example of a schema diagram. It shows three tables, along with their data types, relationships between the tables, as well as their primary keys and foreign keys.